文章基本信息

标题：An Evaluation of Potential Occupational Exposure to Asbestiform Amphiboles near a Former Vermiculite Mine
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作者：Julie F. Hart ; Terry M. Spear ; Tony J. Ward 等
期刊名称：Journal of Environmental and Public Health
印刷版ISSN：1687-9805
电子版ISSN：1687-9813
出版年度：2009
卷号：2009
DOI：10.1155/2009/189509
出版社：Hindawi Publishing Corporation
摘要：Amphibole asbestos (AA) has been detected on the surface of tree bark in forests neighboring an abandoned vermiculite mine near Libby, Montana. In the present study, simulations were performed to assess potential AA exposure associated with United States Department of Agriculture Forest Service (FS) occupational activities. Bark samples were collected prior, and personal breathing zone (PBZ) and Tyvek clothing wipe samples were collected during and immediately after trials that simulated FS activities. Transmission electron microscopy (TEM) analyses revealed AA bark concentrations up to 15 million structures per square centimeter (s/cm2). AA was detected in 25% of the PBZ TEM samples. AA was detected on wipe samples collected from all activities evaluated. This research demonstrates the potential for airborne exposure and transport of AA in the Kootenai National Forest. These findings are especially relevant to those that work in the area and to the general public who may conduct recreational activities.